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Finding the Fourth Proportional to 112,153.47, 154,769.50 and 61,852.47

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Solution

The fourth proportional to 112,153.47, 154,769.50 and 61,852.47 is: 85,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,153.47 : 154,769.50 = 61,852.47 : x
  2. Step 2: Convert to fraction form
    112,153.47/154,769.50 = 61,852.47/x
  3. Step 3: Cross multiply
    112,153.47x = 154,769.50 × 61,852.47
  4. Step 4: Simplify right side
    112,153.47x = 9,572,875,855.67
  5. Step 5: Solve for x
    x = 9,572,875,855.67/112,153.47
  6. Step 6: Final answer
    x = 85,355.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.